Extra Exposure Margin

Hi - I am currently using ICICI Direct (since I just started out and had a ready account with them).

For selling Nifty option spreads, in addition to the SPAN+Exposure margin required by NSE, they are charging one extra round of Exposure margin as required by their RMS.

Is this the same case for all brokers including Zerodha?

Any help will be appreciated.

Thanks!